#!/bin/bash
while true;do
	time=`date +%m"-"%d" "%k":"%M`
	day=`date +%m"-"%d`
	rx_before=`ifconfig eth0|sed -n "8"p|awk '{print $2}'|cut -c7-`
	tx_before=`ifconfig eth0|sed -n "8"p|awk '{print $6}'|cut -c7-`
	sleep 2
	rx_after=`ifconfig eth0|sed -n "8"p|awk '{print $2}'|cut -c7-`
	tx_after=`ifconfig eth0|sed -n "8"p|awk '{print $6}'|cut -c7-`
	rx_result=$((($rx_after-$rx_before)/256))
	tx_result=$((($tx_after-$tx_before)/256))
	echo "ech0 $time Now_In_Speed: "$rx_result"kbps Now_OUt_Speed: "$tx_result"kbps"
	sleep 2
done
